Electric indicating system for railways.



5 kine and Stateof e principle be 35 4c. but at different s 45 my invention is v struction.

PATE@ artnr-etna onovn- Dnen?, or irnscs, :ser: tiene@ :aimerais minimo staren non nauwere.

To all whom it com:

Be it known t t I Hnnnnnr Gnovn Deum, s dem of .the nica smo. ma s resident of` Ithaca i; the county of om York, have inven a new and Improved Electric Indicating System for Railways, of which the following is a t full clear,`and exsctdescription.

invention relatesto certain improveio ments in stems employed `on railways, so

construe thafthefengineer or other cmployeeon one tram may asoertain'the preeencelof an obstruction to the free passage of the train and whether said obstructioncom- 15 prisesA sn'openswitchzla vbroken rail, or a secondv tram, that is, ifsuch' obstruction is within a predetermined'ldistanoe fromA tli'e'l m In'k improvedfsystem the trainmanis enabed is a movingtrain ,he mayalsoascertam the .direction inwhicli this second train is moving'andthetpeedofthesame. Tl

s pred'e distance from -sold 'retention' and" the direction' from wh ch seid trainis coming and the-rate at `which it is trv l. .fr Y

so Referenoo'is to be had to the accompiimerendine 85 Figure; :1'y illustrates diagrammaticelly the is insulated' fromthe ground and from the so other conductor, and may comprise a'third rail, a trolley wire, orang other suitable coning upon the rangetc begiven to the instrues mentsearried bytne'trainshe sections bel o! Letters Patent. Applied lenght D07. Isrlsl I o. t'.

'not'only to the" so presence ofsuch an obstruction, butin case it lo ed for ascertaining rom a staton, y msant a train comes- -same direction;4v

This conductor is subdivided. into sections of any desiredllength depend' Infected :my 7; icon. 3

I llxg referably from ahali mile to a mile long.

esired, the several sections may overlap at their ends or may be in du licate with the brakes in one con uctcr in rmediate the ends of the sections of vthe other conductor, w 'each train ma at all times communicate for a considera lc distancein front and behind. The other oon-' ductos'y may also und,` `but is preferably continuous. -In e simplest form of construction, one'o'f the rails-'of the railway -llrisieinployed as' this conductor. n. aohA cames mechanismfor generatmg anelectric current, the te' of said rate conductors, -Y there being -gen'eretor being conviectedto the tto sepa 0 vno current owingunless the two conduc be insulated from .the

tore be shortcircuited b a secondtrain or un obstruction. -Ae' ustrated diagrammatically, each car carries a dvnamp 12, geared to' the ca r 'wheel'iem tiret it rotates at s a d di.

rectly proportional to -thc speed of train. The dynamo ma be of any suitable type, and generate oit er a direct, alternate, or giilsating current, the nature of the current ingcomparativelyunm rtant. The en erator is reversible, that fis, when rota in the reverse direction it operates equallyas well but the poles are reversed and the current flows in the other-direction. Onelead' lffrom a brush of 'the dynamo is connected to the broken conductor while the' other lead 15' is connected through the-cary axle and car wheel to the other cdnductoror car track 11; In one of these leads `o1ooiinec tions, I insert an instrument 16,v constructed along the same lines as an axnmstoi', but preferably calibrated to in distance per unit ottime, pi'eerabliy,` m hour. SlimlitcdA across the ynamogbetween the sections 14 and 15, is a second instrument 17,. somewhat to-the instrument 16 but consfructed more on the lines'of a voltmeter.

This instrument isalso calibratedto reed in distance unit ont time. A)Inconnection with the dynamo circuit, a separate relay circuit, is employed thelatte including a battery 18a1'audi le `o1j. 1.'r.nle e 19, and va circuit 26, .prefernbly mung the armature of 2i dis,- poscd in the generator-cunning `the lende` orconnections 14, 'belindthe instrument 17, .il Preferibly 'l-Nyiin #im 22,-Wl,1reby themechanwhentheengieorssroarrying e be revealed,

Y atmen.

imi ini turned around to travel in the opor site direction, thedxrection of currlmtl tney A the comluotore.101ml11,`= If eny`iobetruc- @eth1-wk, .www l cn'cuihbetween tho 'tro conductgorlgthe eur'- rentcemthenfresdily ilomromithe .d mno the othprfconductorlendgtheother leed to ,the `The'freiet'extoo to'f the of lthe current. the-conducrsxssosmell com dtov ereeistsnceof the 4 rtionof the system carried on`the mun; the ,the inotrmnentll 16 end L7, will reed sub stentxslly the endl Almost if. not identxcsll l' lThe punge of the' current through thev ectromxet 1 closes' therelsy'circuitsndffo tee t e signsl,19,I tocell the 'ettention the enineer or other tuinman to the fectthet e mort-circuit between the'vcondoctors 10. and ll'exiets Somewhere long thc f the particular section ofthe conduttori() which the'treinie ps ssing over. .1f themed. issubotsn y the mythe treinmen will know thetthe obetrl'lctxon u not a. moving tnt15 -but that 1t xs extherlen open wlitch,L e etetionery trein ore boord or other objet:l coroneI he .conductors to lignei' the rem to stop. I h Iithereere two traine on the seme section end both mo'nng, they both will be deliverxng'current tothe conductora und if both of theftreir'ere movin" in the seme direct-ion,

. .A ."'U the positive pole of each will communicate with the come conductor. If the .two trains 'are going et identicrllythe seme iqpeed-Y each Gli dynamo will counteract. the olect of 'the other and the indicatore 16 ofthe two'treins will both' the neme on though ltheywore on a' "clem"truck.` if either trein is going fester than the other, the dynamo of 'that ,train will overbelmcethe eiectjof the other d remo, and e current 'will Jflow, the etten ,th-

o which will 'befdelendent upon the di Lerenceins ,T e reading on tno ,footer trein will e plus to the extent of thie dierence, and the reeding on the slower trein will hc minus to the. amc fxtent. Astlie indicetor 17 oi om* mi le uneil'ectedby the presence ci the other train, ite reading 7'will show the speed ol the particular trein carry-- inv it, independent or the 'presence of any other trein. .ii the two trainante traveling in oppeite directions, that is, toward or from,

l to -short' lever nl` thrown tosend the on the ir'xstrumehto16I and 17- `ond trein. Thus the mees euch other, the positive pole of omit dynamo will he connected to diilerent conductora mi the twodynmnm will he acting in serine. Thun he mount of curmnteot through the circuitwill be dependent upon the eum the epeule o! the two treim and o n euch trein the indicator 16 will show thin sum. It le thus ,evident-thetthe engineer een 'et any time tell to',-} "certeioty whether en other trein u on theeegxebloolr with him, w .ther or not thet trom isfjmovi, und Vif movinggithe di .rectnon endspeed auch movement. l

The''revereingtwitch 22 is not operated when yoi'trexrx merelyreverses ite Adirection of lmolgna it* lang l ,Y Y, fee'the-treinremuns heeded my` `sommeil throughroneo'theleeds sndonefof e confrectiongfthe y switch reiheinsststionery, .doctors to the obstruction; back tof .e ,0:10. etxnnftsblwrf mund-e100 who w the F- opposite dn'ectmn,h thenj the reversing A y current in the reverse direction, no' that sll troinetreyelin'g in one direction will deliver-currenttto'one 4of the' conducwm, while ell trsineftreveling' m the reverse direction willdeli'ver current to the other conductor. In each circuit, there me be provided, if' desired e switch by which the current may be. broiten at will, or,l

'if desired,'.e reversing switch mcy be cmployed for this p The engineer upon not on. the in xcntor 36. that e second trein u on his block, may byoperating the switch, make en .break the currcntto send e message to the, ot er trein, tlie meesege being reed bythe otherengineer by the variations in the position of lthe mdictorl of said socege my be sent geroundon in the dots und dashed ofthe 'Mone code or any other codedeeiredl,l At each switch the construction is auch that the o nin co the switch pieces the conductor 1 in eectricel contact with the conductor 11,Hw'hereby es soon as the trein'reechea theopposite endet the block' from said switch,l the en'gin'eernot` i'ng on the indicator 16 the closed 'circuit condition, tekes'tlxe propcrpreceution toeyoid enaccident. v. i j

` As iluetreted iii-Fig.; 2y one o f the rails l1 forming a lvconductm'` iefprcvxded wxth'j a spring contact 23, which when the at aightnwey track is clear is out ofwengegement with the conductor 10, but es boon, es the switch is thrown to'the-positionillustrat'ed, lo link 24 permits the closing ofthe circuit between the conductor l0 and spring 23.'. 'Each of the stations along the trelolr me be provided with' mechanism similer'to' tA at carried by the cera, or may contain limly e mcchan iam .for closing thecircuit be' weon the tivo conductors, seid circuitoloslingl umanamcluding o. ewitch' and enl indicator. The stetionman by closing the switciiindicetes to the Ieprouching tremthet the rood is not clear, or y intermittently opening und clos- W1 1 E v W" tch-milf umd 'my im m www Mmmmmmww mm Hmm. v m i wn mz .m 1 .W Mmmm ,Mmmm a ...W um wwwmgmwwmwmwmw Mmmm www wm mmm .mwwmmmmm.mmmmwmm www mm mm.wmwwwmmmmmmm www M www Mmmwm www@ L 5mm .mw ,wwwmmwmmmmm mmm mwmmm Mmwwmwmw mmmmwmm mmm? m Tum@ ffm. u., www.. u mm, @www ,www .wf h www. m m m...... m Www .i ,A www Mw un Y .am www- WmA n 4 A www?. 1.. 

